<!DOCTYPE html>
<html>
	<head>
		<meta charset="UTF-8">
		<title></title>
		<style type="text/css">
			.box{
				width: 300px;
				height: 300px;
				border: 1px solid red;
			}
			.box p{
				color: green;
			}
		</style>
	</head>
	<body>
		<div class="box">
			<p>ppppppppppppp</p>
			<h1>h111111111111</h1>
			<div class="box2">
				<span id="span1">
					span
				</span>
			</div>
		</div>
	</body>
</html>
  